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Browser Extensions & Plugins

MarklyKit

Browser extension for highlighting, annotating, and taking notes on any webpage

Community votes
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DR by Ahrefs
0 no change since last check

Ahrefs Domain Rating benchmarked 27 Oct 2026, rebuilt 27 Oct 2026.

A browser extension that lets you highlight, annotate, and take notes on any website, with local-first storage and PDF export capabilities.

What it is

Screenshot of the MarklyKit homepage
marklykit.com, as visitors see it

MarklyKit is a Chrome extension designed for researchers, students, and developers to highlight, annotate, and take notes directly on any webpage. Your annotations are saved locally and reappear whenever you return to the page. The free plan includes unlimited highlighting and drawing on any page with local storage on a single device. The Pro plan adds cloud sync for highlights and sticky notes, PDF export with citation-ready formatting, and AI connectors for Claude, ChatGPT, and Grok through a built-in MCP server. All features are built around privacy, with your research data never sold or shared with third parties.

What it is built with

  • Privacy masking with blur tool for sensitive data
  • AI connectors for Claude, ChatGPT, and Grok via MCP server
  • Local-first storage with optional cloud sync on Pro plan
  • Keyboard shortcuts for rapid tool switching
  • Focus mode to toggle annotation visibility
  • Browser PDF highlighting support

Pricing

Pricing model: Freemium

Free plan includes unlimited highlighting and drawing with local-only storage. Pro plan costs $7.99/month with a 7-day free trial, including cloud sync, unlimited sticky notes, PDF export, AI connectors, and API access.

See MarklyKit's full pricing (new tab)

MarklyKit metrics

Benchmarks for marklykit.com: Ahrefs Domain Rating and Majestic link data, with the change since the last build.
MetricValue
Domain Rating0 no change since last check
Trust Flow0 no change since last check
Citation Flow6 no change since last check
Referring domains2 no change since last check
External backlinks7 no change since last check

Ahrefs Domain Rating benchmarked 27 Oct 2026, rebuilt 27 Oct 2026. Majestic benchmarked 27 Oct 2026, rebuilt 27 Oct 2026. Link data built by Majestic. Trust Flow, Citation Flow and Topical Trust Flow are trademarks of Majestic-12 Ltd.

MarklyKit domain build sheet

Open the build sheet
Public RDAP record, last read 27 Oct 2026, 14:50 UTC.
Domain age6 months
Registered
Expires
RegistrarHOSTINGER operations, UAB
DNSSECNot signed

Inspect marklykit.com's registration

Questions from the bench

Will my highlights still be there when I come back?
Yes. Highlights, notes, drawings, and blurs are saved for each page and restored every time you return. If a site significantly changes a page after you highlight it, some highlights may not reattach on the page — but they stay saved with their original text and context, and Pro users can still find them in All Notes and the dashboard.
Is my research data private and secure?
Your privacy is the baseline. On the free plan, every annotation stays on the device where you created it. On Pro, your highlights, folders, and sticky notes sync to your own private MarklyKit cloud so PDF exports and AI connectors can reach them — only you can read it, and you can delete it at any time. Drawings and blurs are always device-local.
Can I use MarklyKit for academic research?
Yes, it is specifically designed for academic research. With Pro, you can export your findings as citation-ready PDFs that include the source URL, timestamp, and your semantic tags, ready for long-term archiving.
Which browsers are supported?
MarklyKit works on Chrome, Edge, and Brave. The platform focuses on Chromium-based browsers to keep the experience consistent and reliable across complex sites.
Do I need an account to start highlighting?
No account is needed to start. Install the extension and begin highlighting immediately — your annotations are stored locally on your device.

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